package com.rising.face.bio;

import java.io.IOException;
import java.io.InputStream;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

/**
 * @Author: rising
 * @Description:
 * @Date: create in 2021/1/23 10:23
 */
public class BIOServer {

    public static void main(String[] args) throws IOException {
        //线程池机制

        //思路
        //1、创建一个线程池
        //2、如果有客户端连接，就创建一个线程，与之通讯（单独写一个方法）

        ExecutorService newCachedThreadPool = Executors.newCachedThreadPool();

        //创建ServerSocket
        ServerSocket serverSocket = new ServerSocket(6666);

        System.out.println("服务器启动了");

        while (true) {

            //监听，等待客户端连接
            System.out.println(Thread.currentThread().getName() + "线程等待连接。。。。。");
            final Socket socket = serverSocket.accept();
            System.out.println("有一个客户端连接了");

            //就创建一个线程，与之通讯（单独写一个方法）
            newCachedThreadPool.execute(new Runnable() {
                @Override
                public void run() {
                    //可以和客户端通讯
                    handler(socket);
                }
            });
        }

    }

    //编写一个handler方法，和客户端通讯

    public static void handler(Socket socket) {

        try {
            System.out.println("连接线程信息 id = " + Thread.currentThread().getId() + ",名字=" +
                    Thread.currentThread().getName());
            byte[] bytes = new byte[1024];
            //通过socket获取输入流
            InputStream inputStream = socket.getInputStream();

            //循环的读取客户端发送的数据
            while (true) {
                System.out.println("通讯线程信息 id = " + Thread.currentThread().getId() + ",名字=" +
                        Thread.currentThread().getName());
                System.out.println("read。。。。。");
                int read = inputStream.read(bytes);
                if (read != -1) {
                    System.out.println(new String(bytes, 0, read));//输出客户端发送的数据
                } else {
                    //没有数据直接返回
                    break;
                }
            }
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            System.out.println("关闭和client的连接");
            try {
                socket.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }

    }

}
